The solenoid is not the big issue now because you can jump the 2 bolts.
I would start following the wire and power the CDI. I would concentrate on getting spark first. Like I said before, spark plug out and touching the engine to ground it. When you touch the 2 bolts of the solenoid, the pick up coil will send the signal to the CDI and you should have spark. This is a long and painful process, trust me I did that many times.
Of course, you could spend money and buy everything but next time something break, you do the same thing over and over. This process become really expensive, changing everything every time !!! As you go thru you will learn more and more and get better. Trust me we went thru the same thing as you before.
Narrow down the problem and keep track of what you do on a piece of paper.
Soon the engine start, you will have a big smile
At this point you can rewires, clean up everything because you have a working machine. If there's something you don't understand or not sure, post it and someone will be able to tell you how exactly.